METHOD OF INJECTION ANCHORING OF THE BOULDER-PEBBLE SOIL WITH UNFILLED VOIDS AND HIGH SPEEDS OF FILTRATION FLOW IN THEM Russian patent published in 2019 - IPC E02D3/12 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, in particular to the methods of injecting soil, for example, of the boulder-pebbly soil, with empty voids and the rate of filtration flow in them more than 2400 m/day. Method of injecting the boulder-pebble soil with unfilled voids and high velocities of the filtration flow in them includes drilling the well, after its penetration, the installation into the well of the perforated pipe, the equipment of the holder, the installation of the injector with the rubber cuff mounted on it. To create an injection curtain of high density and water resistance in the space between the casing 1 and the pipe perforated with 2 pipes a gravel holder is poured out of sorted washed gravel with the size of 4–10 mm, while receiving the injection chamber, which is constricted with the wall of the perforated pipe, gravel holder and rubber cuff. Then the casing is removed, the injector pipe with an open end is lowered into a perforated pipe, providing in the injection chamber the optimum pressure and uniform distribution of the injection solution flow through the walls of the perforated pipe and the gravel holder layer in the injection zone.

EFFECT: technical result consists in ensuring uniform distribution of the injection solution flow throughout the injection zone, creating an optimal pressure in the injection chamber to obtain an economical profile of the injection curtain by reducing the radius of the solution.

1 cl, 1 dwg